Method for reliable message delivery in a network of mobile computers

1. A method for delivering a message among at least three parties on a network comprising: augmenting the services provided by a Network Service Provider (NSP) using a store-and-forward method and a token which is stored in a mobile computer; wherein said mobile computer connects to said network through said NSP at a specific point-of-presence, and said mobile computer makes a request for a resource; if said resource is available, the request is serviced, and the mobile computer receives an acknowledgment indicating completion of said request; if said resource is not available, a system at the point-of-presence performs a function comprising: logging in said request in persistent storage on behalf of said mobile computer; and sending a token containing the address of the point-of-presence said token is stored in said mobile computer; said token represents an identifier of the last point-of-presence used for connecting to said network and said token is used for inquiring about previous requests, thereby guaranteeing delivery of requests in spite of lack of resources availability.

2. A method according to claim 1 wherein said system at said point-of-presence if said resource is not available is an algorithm.

3. A method according to claim 1 further including optionally disconnecting said mobile computer from said network, once said resource becomes available, whereupon a system at said point-of-presence sends one or more multiple requests to a server and receives acknowledgement of completion, said system at said point-of-presence stored said acknowledgement for later inquiry.

4. A method according to claim 3 further including a process wherein when said mobile computer reconnects to said network through the same or a different said point-of-presence, and said mobile computer sends the last token stored in its local storage, said system at said point-of-presence inquires for pending requests at the location the token indicates; if said requests are completed, acknowledgement is sent to said mobile computer, if said requests are not completed, said requests migrate to a new point-of-presence and a new token identifying a new point-of-presence is sent to and stored at said mobile computer.

5. A method according to claim 4 wherein said process is invoked each time the mobile computer connects to the network, until all pending requests are completed.